Display screen or portion thereof with dual panel graphical user interface



FIG. 1 is a front view of a first image of a display screen or portion thereof with dual panel graphical user interface showing our new design;

FIG. 2 is a front view of a second image thereof, having rotated the display screen;

FIG. 3 is a front view of a third image thereof, having rotated the display screen; and,

FIG. 4 is a front view of a fourth image thereof, having rotated the display screen.

The broken lines showing a display screen or portion thereof and elements of the graphical user interface illustrate portions of the article. None of the broken lines form part of the claimed design.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-4. The process or period in which one image transitions to another forms no part of the claimed design. 

CLAIM The ornamental designs for a display screen or portion thereof with dual panel graphical user interface, as shown and described. 